body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1;
}

.footer {
    margin-top: auto;
}

.card {
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.card-header {
    font-weight: bold;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.jumbotron {
    background-color: #f8f9fa;
    border-radius: 0.3rem;
}